wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Electromagnetism

Total questions: 85

Worksheet time: 2hrs 53mins

Name
Class
Date
1.

The area around a magnet is called the .....

a)

attraction zone

b)

work area

c)

magnetic field

d)

hot zone

2.
The picture is an example of an:
a)
Electric circuit
b)
Electromagnet
c)
Electric nail
d)
Electric power cell
3.
What is the direction of the current in the wire?
a)
up
b)
down
c)
left
d)
right
4.
What side of the wire is positive?
a)
left
b)
right
5.
What is direction of the magnetic field around the wire?
a)
clockwise
b)
counterclockwise
6.
What is the direction of the force acting on the wire?
a)
into the page
b)
out of the page
c)
up the page
d)
none
7.
What component of the velocity is important to figure out the direction of the force acting on the charge and what direction is the force?
a)
x component, into of page
b)
x component, out of page
c)
y component, into page
d)
y component, out of page
8.
If the current is going up on the front side of the coil then what side of the electromagnet is north?
a)
Up
b)
Down
c)
Left
d)
Right
9.

Using the right hand rule, B represents the direction of the

a)

current

b)

magnetic field

10.

Using the right hand grip rule, A represents the direction of the

a)

current

b)

magnetic field

11.

Using the 1st right hand rule, if the current is flowing out of the screen then the magnetic fields will flow from...

a)

A to D to C to B and around

b)

A to B to C to D and around

c)

A to C to D to B and around

d)

A to C to B to D and around

12.

Using the 1st right hand rule, if the current is flowing into the screen then the magnetic fields will flow from...

a)

A to D to C to B and around

b)

A to B to C to D and around

c)

A to C to D to B and around

d)

A to C to B to D and around

13.

When a permanent magnet is cut half what will be the result?

a)

Two single pole magnets, one with a north pole and one with a south pole.

b)

Two dipole magnets, each with a north and south pole

c)

The piece of metal will lose it magnetism

d)

Two single pole magnets, each of the magnets only having north poles

e)

It depends where you are on the earth when you cut the magnet

14.

Diagram above shows a solenoid. Which of the following rules may be used to determine the direction of the current in the coil?

a)

Fleming’s Left Hand Rule

b)

Fleming’s Right Hand Rule

c)

Right Hand Screw Rule

d)

Right Hand Grip Rule

15.
What happens to the strength of an electromagnet as you add more coils around it?
a)
Increases
b)
Decreases
c)
Stays the same
d)
Stops completely
16.
In Flemings Left hand rule what does the thumb point in the direction of?
a)
The direction of the magnetic field
b)
The direction of the current
c)
The direction of the force (movement)
d)
None of these
17.
The current in the green wire flows from the left to the right. What direction does the wire move?
a)
Up 
b)
Down
c)
Into the page
d)
Out of the page
18.
The strength of the magnetic field produced by a flowing current in a wire is affected by:
a)
The size of the Current
b)
The distance from the wire
c)
The number of coils of wire
d)
All 3
19.
What should the blanks be?
When a wire carrying an electric current is placed in a ________________, it may experience a force. The field from the fixed magnet ___________ with the field due to the current. This can cause the wire to be attracted or repelled from the fixed magnet you will see the effect of the attraction/repulsion in  the ___________of the wire.
a)
magnetic field, interacts, movement
b)
electric field, interacts, movement
c)
magnetic field, interacts, vibration
d)
circuit, interacts, movement
20.
How is an electromagnet different from a permanent magnet?
a)
An electromagnet is smaller and less powerful.
b)
An electromagnet's magnetism can be turned off.
c)
An electromagnet can be built without using metal.
d)
An electromagnet does not attract objects containing iron.
21.
In Flemings Left Hand Rule, in what direction does the second (middle) finger point? (The first finger is the one by your thumb
a)
The direction of movement
b)
The direction of the magnetic field
c)
The direction of electrical current
d)
The direction of electron flow
22.

A __________ is an electrical device that converts AC electricity from one voltage level to another

a)

transformer

b)

primary coil

c)

secondary coil

d)

center tap

23.

The diagram show the direction of magnetic field,B and current, I.

By using Fleming left hand rules, determine the direction of Magnetic force, F.

a)

left

b)

downward

c)

into the page

d)

out from the page

24.

The diagram show the direction of magnetic field,B and current, I.

By using Fleming left hand rules, determine the direction of Magnetic force, F.

a)

no force produced

b)

right

c)

into the page

d)

out from the page

25.

The diagram shows a cross-section through a simple DC motor. Select the correct statement:

a)

The loop will rotate clockwise

b)

The loop will rotate anticlockwise

c)

The slip rings aid commutation

d)

The loop rotates the same way even if the battery is reveresed

26.
Which rule do we use to predict the direction a current carrying wire will move in a magnetic field?
a)
Fleming's Left Hand Rule
b)
Fleming's Right Hand Rule
c)
Faraday's Left Hand Rule
d)
Faraday's Right Hand Rule
27.

What direction does the wire move?

a)

Up

b)

Down

c)

Left

d)

Right

28.

What direction would the wire move? (What direction does the force act?)

a)

Up

b)

Down

c)

Left

d)

Right

29.

What direction does the force act?

a)

Up

b)

Down

c)

Left

d)

Right

30.

Why might a current-carrying wire be placed between a magnetic field?

a)

To increase the current from the interaction of magnetic fields

b)

To increase the voltage from the interaction of magnetic fields

c)

To produce a force from the interaction of magnetic fields

31.

What direction is the force/motion in the following diagram?

a)

Perpendicular to the magnets

b)

Downwards

c)

Parallel and through the magnets

32.

What angle must there be between a magnetic field and a conductor in order for the maximum force to be exerted?

a)

180

b)

45

c)

90

d)

270

33.

Name one factor that does not affect the size of a force in on a current-carrying conductor placed in a magnetic field?

a)

Gravity

b)

Magnetic flux density/size of magnetic field

c)

Size of the current

d)

Length of the conductor

34.

Which rule can be used to work out which way a coil of wire rotates in a motor?

a)

Fleming's left-hand rule

b)

Fleming's right-hand rule

35.

Give two ways you can reverse the direction of a basic dc motor?

a)

Reverse the current

b)

Keep the current the same

c)

Reverse the magnetic field

d)

Keep the magnetic field the same

36.

Magnetic field produced around a straight conductor due to current in it is given by

a)

Fleming's right hand rule

b)

Right hand grip rule

c)

Clock rule

d)

Fleming's left hand rule

37.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
38.
What is an electromagnet?
a)
a temporary magnet made from current carrying wire around a magnetic metal core.
b)
a permanent magnet with a north and south pole
39.
How are electromagnets different from magnets?
a)
magnets can be turned on/off
b)
you can turn an electromagnet on/off
c)
magnets are more powerful
d)
magnets have a North and South pole
40.

Which materials are magnetic?

a)

Wood

b)

Zinc

c)

Cobalt

d)

Aluminium

e)

All the Above

41.

Which of the following does not influence the strentgh of electromagnet?

a)

Number of turns of wire

b)

Magnitude of current flow in the wire

c)

Type of core

d)

Material used for insulator of the wire

42.

Diagram above shows the apparatus used to study the effect of an electromagnet. Which change will increase the number of paper clips attracted to the iron rod?

a)

Use a thinner wire to form the coils

b)

Use a non-insulated wire to form the coils

c)

Reduce the number of coils

d)

Increase the magnitude of current

43.

Diagram above shows the apparatus used to set-up to observe the magnetic field due to a current in a coil.

a)
b)
c)
d)
44.

In a DC Motor, the coil of the rotor turns into an electromagnet when

a)

the rotor rotates inside the stator

b)

electricity (current) flows through the coil

c)

the rotor is turned by the axle

d)

the it sits int the field of the stator

45.
Electric motors are devices that convert _____ energy into  _____ energy.
a)
electrical; mechanical
b)
mechanical; electrical
c)
chemical; potential
d)
mechanical; kinetic
46.
Which is the device in DC Generators that converts AC current into DC current
a)
brushes
b)
commutator 
c)
stator
d)
armature
47.
Which of these is NOT a part of a DC Generator.
a)
Slip rings
b)
commutator 
c)
brushes
d)
stator
48.
DC Generators give 
a)
mechanical energy
b)
Electrical energy 
c)
DC Electrical energy 
d)
AC Electrical energy
49.
The process of generating the current in a conductor is called as 
a)
Electro motive force 
b)
Electromagnetic induction 
c)
generator energy conversion 
d)
induced voltage
50.
AC generators have 
a)
2 slip rings 
b)
1 slip ring 
c)
3 slip rings 
d)
4 slip rings
51.

According to the Lenz's law, if you pull the magnet away, then the induced current will

a)

change the pull

b)

go with pull

c)

oppose the pull

d)

both a and b

52.

A loop of wire is placed near a current carrying wire as shown below. Which of the following actions will NOT produce an induced current in the loop?

a)

Moving the loop towards the wire

b)

Moving the loop away from the wire

c)

Moving the loop parallel to the wire

d)

Increasing the electric current in the wire

53.

A circular conducting loop is in a region of magnetic field B directed out of the page, as shown below. The magnitude of the magnetic field is decreasing. The direction of the induced current in the loop is

a)

Clockwise

b)

counterclockwise

c)

Undefined because the current is zero

d)

Impossible to determine without knowing the rate of change of field

54.

According to Lenz’s law the direction of an induced current in a conductor will be that which tends to produce which of the following effects?

a)

enhance the effect which produces it

b)

produce a greater heating effect

c)

produce the greatest voltage

d)

oppose the effect which produces it

55.

Determine the direction of the current across the resistor ab when the switch S is closed after being open for several minutes.

a)

a to b

b)

b to a

c)

no current

56.

Determine the direction of the current across the resistor ab when coil B is brought closer to coil A while the switch S is closed.

a)

a to b

b)

b to a

c)

no current

57.
___ Law says that the Induced current is proportional to the change of magnetic flux 
a)
Lenz'
b)
Faraday's
c)
Ampere's
58.
___ Law says that a current produced by an induced emf moves in a direction so that its magnetic field opposes the original change in flux
a)
Lenz'
b)
Faraday's
c)
Ampere's
59.
Find the direction of the magnetic force.
a)
Into the screen
b)
Out of the screen
c)
Right
d)
Left
60.
In 1831 who discovered electromagnetic induction?
a)
Thomas Edison
b)
Nikola Tesla
c)
Michael Faraday
61.
 Faraday's Law states that the induced emf is proportional to Hide answers
a)
the current 
b)
the cross sectional area of the coil 
c)
the rate of change in the flux of the coil
62.
Electromagnetic induction is change in ___________________. 
a)
surface area
b)
magnetic poles
c)
magnetic flux
63.

Can you produce current in a wire with a magnet that is sitting still?

a)

Yes; having a magnet near a wire is enough to excite the electrons

b)

No; the magnetic field has to be changing to excite the electrons

c)

No; magnets cannot create electricity

64.

Faraday's law calculates voltage.

a)

True

b)

False

65.

What does the following represent?

⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗

⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗

⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗

a)

Multiplied by a billion

b)

A piece of modern art

c)

Uniform magnetic field directed into the screen away from you

d)

Uniform magnetic field directed out of your screen at you

66.

Are the magnetic field lines in the picture correct?

a)

Yes, because they point from north to south.

b)

No, because they point from north to south (they're supposed to go the other way).

c)

Yes, because the North pole is on the left in all pictures.

d)

No, because the North pole is on the left in all pictures (it's supposed to be on the right).

67.

The strongest part of a magnet is...

a)

the bars .

b)

the force field.

c)

the poles.

d)

the middle.

68.

The area of magnetic force around a magnet is known as its _____________.

a)

magnetic field

b)

magnetic declination

c)

magnetic fan lines

d)

magnetic tan lines

69.
In this image, matching north poles from two magnets are introduced.  What do you predict will be the outcome?
a)
There will be no interaction.  The poles of magnets do not have an effect on one another.
b)
The two north poles will attract each other
c)
The two north poles will repel each other
d)
The two magnets will combine and become one magnet
70.

Looking at the field lines in this picture, these two magnets are ________

a)

Attracting

b)

Repelling

c)

Attracting and Repelling

d)

Doing nothing

71.

Which scientist found the key to Alternating current by rotating a magnet?

a)

Oersted

b)

Farraday

c)

Maxwell

d)

Tesla

72.

1) A wire carries a current, creating a magnetic field around itself as shown. The current in the wire is:

a)

A. Directed to the right

b)

A. Directed to the left

c)

A. Equal to the magnetic field

d)

In the same direction as the magnetic field

73.

1) The magnetic field inside the coil shown below is directed:

a)

Into the page

b)

Out the Page

c)

To the left

d)

Towards the bottom of the page

74.

Solenoid #1 has a length L, cross-sectional area A, and N turns. Solenoid #2 has a length 2L, cross-sectional area 2A, and 2N turns. Which solenoid has the greater magnetic field at its center when equal currents are going through them?

a)

#1

b)

#2

c)

Both have the same magnetic field.

d)

Since it depends on the values of A and L, none of the above are correct

75.

1) In the figure, using the right hand rule around a solenoid, which of the below statements is correct:

a)

North Pole is 7 and South pole is 8

b)

North Pole is 8 and South Pole is 7

c)

There is no magnet, so no north or south

d)

The current is flowing in the direction from 7 to 8

76.

1) A straight wire carries a current inside the paper. What is the direction of the magnetic field at point P?

a)

Points to the right

b)

Points to the left

c)

Points to the top of the page

d)

Points to the bottom of the page

77.

1) A bar magnet is at rest, next to a fixed electromagnet. In which direction will the bar magnet move when switch S is closed?

a)

to the left

b)

to the right

c)

up the page

d)

down the page

78.

Two parallel wires of length 2 m are separated by 40 cm. If the magnetic force between the two wires is 2 ×10^-6 N and the current in the second wire is twice the current in the first one.

1) Which of the following is true concerning the force between the two wires:

a)

The magnetic force is a repulsion between wires

b)

The magnetic force is an attraction between the wires

79.

1) Two long, parallel wires each carry the same current I in the same direction. Is the total magnetic field at the point midway between the wires:

a)

Zero

b)

Directed into the page

c)

Directed out of the page

d)

Directed to the left

80.

The voltage induced in a conductor is ___________ ___________ to the rate which the conductor cuts the magnetic lines of force.

a)

inversely proportional

b)

directly proportional

c)

negatively coorelated

d)

absolutely opposite

81.

In order for electromagnetic induction to occur, you need...

a)

a conductor

b)

a magnetic field

c)

relative motion

d)

all three

82.

If the coil is moving anti-clockwise, state the direction of the current on the left wire.

a)

Upward

b)

Downward

c)

Into the paper

d)

Out of the paper

83.

Which rule is used to find the direction of magnetic field around a straight conductor

a)

Flemming left hand rule

b)

Lenz law

c)

Flemmings right hand rule

d)

Right hand thumb rule

84.

Diagram below shows parts of an electric bell. Give 5 modifications and reasons so that the bell can last longer, produce louder sounds, easy to locate in case of emergency, and additional features. You may comment on every part of the bell please, go crazy and creative! (10 marks) Cara jawab macam ni:-

  1. Wrap the hammer with cloth, to produce louder sounds.
  2. ......
4 lines
85.

Diagram shows the parts of a DC Motor. Give 5 suggestions and modifications so the DC motor can be changed to AC generator, generate high electricity, used in hot country like Bahrain and minimize power loss. Please go crazy and creative! (10 marks) Cara jawab camni:-


  1. Use Y-shaped magnet, to produce strong magnetic field.
  2. ........
4 lines

Similar Resources on Wayground

Wave and Wave Behavior Unit Assessment 2021

89 questions

Wave and Wave Behavior Unit Assessment 2021

quiz

Worksheet

•

10th - 12th Grade

CIA 2 Review

84 questions

CIA 2 Review

quiz

Worksheet

•

9th Grade

UST3122 Q1-V3

84 questions

UST3122 Q1-V3

quiz

Worksheet

•

12th Grade - University

GCSE - Magnetism

86 questions

GCSE - Magnetism

quiz

Worksheet

•

10th Grade

Dynamics

80 questions

Dynamics

quiz

Worksheet

•

11th - 12th Grade

Describing Motion

87 questions

Describing Motion

quiz

Worksheet

•

5th - 12th Grade

2019-Conceptual Physics Semester 2 Final Review

90 questions

2019-Conceptual Physics Semester 2 Final Review

quiz

Worksheet

•

9th - 12th Grade

2.5 MOMENTUM

80 questions

2.5 MOMENTUM

quiz

Worksheet

•

11th - 12th Grade